Coal-mining machine



/ fg/wo@ 3 Sheets-Sham"v 2 C. V. SHANABERGER COAL MINING MACHINE Flled July 1924 -MJMIL Dec. 27;"1927.

wlw/6553 ldatented Der. 27, 1927'.

UNITED STATES rentas Parent orties.

ARL V. SHANAB'ERGER, F '.RCKINGHAM, lINNSYIfW'ANXA, IUWIGNOR TO MINE AP* IPLIANCES COMPANY, .A GDRPRATXN ll JJEIIAWIARE.

ClLw-MlINING IMAC Application lcd .Truly 3, 1924i.

This .invention relates to mining machines and an object thereof is `to produce a relatively simple machine and one thereln'e7 which is relatively cheap to manufacture and simple ot operation, which capable oli severingI or cutting complete blocks or scctions oi' coal from the wall ot a mine.

A further object ot this invention is to produce a mining machine ot relatively siniple construction which is capable oit cuttingr or severing` complete bloclrs or sections troni the Wall ot mine, except 'tor the top oit such sections, which in some mines. will remain attached to the roof', and in others will separate therefrom to allow the severed scction to tall.

A Stfll further object is to provide means Wherf nv most ot the present standard short Wall of' side cutting' machines maj,T be cheaply .ind quickly converted into a machine capable of cuttingr or severing; complete hlochs or sections (except for the top) 'troni 'the Wall et a mine by cutting a vertically ci;- tending channel or hert above the outer end of the cutter bar, While the undercutter is in operation during sumping cutting; across the v,tace and when backing out, thereby greatly increasing the capacity and eliiciency of such standard machines.

These, as Well as other objects which will readily appear to those skilled in the coal mining art, I attain by ine-ans oit the device and the n'lodiiication thereof described in the specification and illustrated in the drawings accompanying and forming; part et this application.

In the drawings, which are more or less diagrammaticl (since standard short Wall or side cutting machines are now Well known) Figure l is a side View in elevation ot a standard type of short Wall machine with my invention incorporated therein Fia'. f2 is a top plan View of the same. Figi'. E is a view similar to Fig, l of a modilied -torni ol device which comprises an imdercutter and an overcutter combined in one machine embodying my invention. Fig'. 4t is an enlarged detail vieuT ot the end ot one ot the cutter bars and shows the cutter chain and the end sprocket for said chain located in the cutter head. Fig. is a 'l'ragrneutarv vieiv 'in sectional elevation o't the head end oit the cutter bar with the vertical cutter forming; a part ot my invention mounted thereon. Fin; 6 is a detail View in section ot one ot the picks or cutter teeth used in the vertical cutter ot this invent-ion and shows the vpreferred torna of set screw tor holdingI the pick or cutter tooth in place. Figs. 7' 8 and 9 L iginphically show the capalfiilitics ol the torni oi machine illustrated in Figs. l and 2; Fig. i' being; taken on line 7- of Fig. 8; Figs. l() and 1l show the capabilities ot the iliorln ol machine shown iu Fig. 3.

l'nFigs. i and El ot the drawings, 10 represents the cutter bar oi' any standard short Wall or side cuttirurf machine `and l'l repreu sente the housirma tor the motor and gears .tor driving' the cuttingr chain l2 and the other mechanism entering into the makeup of the complete nmchinen As shown in Fig. 4, the cutter chain is provided with cutter bits 13 and the outer end of the chain is supported. upon and drives a sprocket "la, The sprocket hub l5 is journaled Within upper and lower bearings respectively nrnnhered 16 and 'i7 formed as part of the cutter head made up of plates l? and 19, Hub ot the sprocket is formed With a central here, Within `which a vertically extending cutter bar it() is secured by means ot a key 21. The vertical cutter bar is provided with a spirally arranged series of sockets or holes for the reception of cutter hits 2l. The bits are secured in place by means of set screws F252., the heads ot Which are pointed to Atorna picks or cutters which will come into play it some of the cutter hits are brolren. The uppermost cutter bit prcterablv torlred and provided with one por tion Whi ch extends above the top of cutter bar 2O so as to cut a clearance for the top of the bar.

From this construction. it will be seen that as the chain is driven. the cutter har E Will likewise be driven and at a speed which Will depend upon the speed ot the chain.

For the purpose ot lubrieatingI the sprocket bearings l provide a lubricant reservoir troni which lubricant in the 'torna oit oil may he fed through pipe aud branch pipes 26 and 27 to the hearings for the sprockethub. In place oi reservoir 524;, any one ci. the Well known torce tend devices now on the market unav he substitutedv ttor 'forcing lubricant to the hearings it desired.

In the Form ol machine illustrated in Fin.

3 I 'provide upper and lower cutter bars ter bar is keyed into the sprockets for both the upper and lower cutter chains which in this form of machine are respectively numbered 28 and 29.

l a shearing cut will be made simultaneously above the sump cut, and, when the cutter is moved across the face of the coal, a rear cut or channel will be made. As the machine is ,backed out the fac-e will be sheared at that point. vA sect-ion of coal will thus he cut away from the face and will be unsupported or unconnected with the face except at the top Where it Will be connected to the roof. With the machine shown in F ig. 3, a section will be' completely severed or cut from the face and as the cutting progresses, the coal will either break and fall in sections or will fall at or near the end of the cut or when he machine is being backed out ot the coal ace.

This type of machine is particularly adapted for thin seam mines, but of course, can be utilized in thick seam mines, if desired.

` Fig. 8 illustrates the operation of cutting across the coal face with the machine moving in the direction of the arrow A. 30 represents the sumping cut. In'making this cut, .the cutter chain will cut a wider channel (represented by side cuts 30L and 30h) 'than .the vertical cutter bar 20. When the Fig. 9 represents the shearing cuts and the cut across the face made by the machine shown in Figs. 7 and S. Dotted line 31 represents the top of the back channel which is shown at 32 in Figs. 7 and 8.

Fig. l0 represents thc machine employingY the double cutter chains as it would a )pear when in the position ot the machine ot Fig.

8 and Fig. ll represents the cuts made by the double chain machine as they appeal' when looking;l toward the face ot the. coal.

Having thus described my invent ion, what I claim is:

l. A combination in a mining machine ot a cutter bar having spaced bearings formed in the outer end thereof, a sprocket wheel mounted in said bearinlegs` and connected to the cutter chain oi said machine, and a vel'- tically extending cutter bar rigidly secured to said sprocket.

2. A combination in a n'iining' machine of a cutter bar having spaced hearings forn'ied in the outer end thereof. a sprocket wheel mounted in said bearings and provided with a hollow hub, a cutter chain cti-operating with said sprocket and a vertically extcndincr cutter bar keyed within the hub of said sprocket.

3. A cutter bar provided with a plurality of cutter bits removably mounted thereon and means for securing said hits in place, said securing.)r means having cutting points formed thereon.

4. A cutter bar provided with a plurality of cutter bits removably mounted thereon. set screws for securing said hits in place and cutting points formed on the heads of said set screws.

In testimony whereof, I have hereunto subscribed my name this 28th day of June, 1924.

CARL V. SHANABERGER. 

